package test.concurrency.executor;

import java.util.Date;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.ScheduledFuture;
import java.util.concurrent.TimeUnit;

public class PeriodMain {

	public static void main(String[] args) {
		ScheduledExecutorService executor = Executors.newScheduledThreadPool(1);

		System.out.printf("Main: Starting at: %s\n", new Date());
		PeriodTask task = new PeriodTask("Task");

		ScheduledFuture<?> result = executor.scheduleAtFixedRate(task, 1, 2, TimeUnit.SECONDS);

		for (int i = 0; i < 10; i++) {
			System.out.printf("Main: Delay: %d\n", result.getDelay(TimeUnit.MILLISECONDS));
			try {
				TimeUnit.MILLISECONDS.sleep(500);
			} catch (InterruptedException e) {
				e.printStackTrace();
			}
		}
		executor.shutdown();
		
		try {
			 TimeUnit.SECONDS.sleep(5);
			 } catch (InterruptedException e) {
			 e.printStackTrace();
			 }
		System.out.printf("Main: Finished at: %s\n",new Date());
	}
}
